stm32-dwmac 5800a000.ethernet eth0: no phy at addr -1
Hi!
Could you please give me exact details of following eth PHY error:
[ 95.822137] stm32-dwmac 5800a000.ethernet eth0: no phy at addr -1
[ 95.826911] stm32-dwmac 5800a000.ethernet eth0: stmmac_open: Cannot attach to PHY (error: -19)
Why it searches addr -1?
I'm using LAN8720 PHY on custom board. Here is kernel device tree:
eth1_pins_mx: eth1_mx-0 {
pins1 {
pinmux = <STM32_PINMUX('A', 1, AF11)>, // ETH1_RX_CLK **
<STM32_PINMUX('A', 7, AF11)>, // ETH1_RX_CTL **
<STM32_PINMUX('C', 4, AF11)>, // ETH1_RXD0
<STM32_PINMUX('C', 5, AF11)>; // ETH1_RXD1
bias-disable;
};
pins2 {
pinmux = <STM32_PINMUX('A', 2, AF11)>; // ETH1_MDIO
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins3 {
pinmux = <STM32_PINMUX('B', 11, AF11)>, // ETH1_TX_CTL
<STM32_PINMUX('C', 1, AF11)>, // ETH1_MDC
/// <STM32_PINMUX('C', 2, AF11)>, // ETH1_TXD2
/// <STM32_PINMUX('E', 2, AF11)>, // ETH1_TXD3
/// <STM32_PINMUX('G', 4, AF11)>, // ETH1_GTX_CLK
/// <STM32_PINMUX('G', 5, AF11)>, // ETH1_CLK125
<STM32_PINMUX('B', 12, AF11)>, // ETH1_TXD0 !!!
<STM32_PINMUX('G', 14, AF11)>; // ETH1_TXD1
bias-disable;
drive-push-pull;
slew-rate = <2>;
};
};
ðernet0 {
status = "okay";
pinctrl-0 = <ð1_pins_mx>;
pinctrl-1 = <ð1_sleep_pins_mx>;
pinctrl-names = "default", "sleep";
phy-mode = "rmii";
max-speed = <100>;
phy-handle = <&phy0>;
mdio0 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dwmac-mdio";
reset-gpios = <&gpiob 15 GPIO_ACTIVE_LOW>;
reset-duration = <200>;
reg = <1>;
phy0: ethernet-phy@1 {
reg = <1>;
};
};
};
Thank you in advance
Looking forward for your reply